Women have significant advantages over men in space because they need less food and less oxygen and they () radiation better.
A. stand up to
B. stand in for
C. stand up for
D. stand in with
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丙氨酸氨基转移酶升高常见于
A. 心肌梗死
B. 尿崩症
C. 痛风
D. 泌尿系统梗阻
E. 霍奇金病
If you plant two apple trees in one square yard of land, and the trees' productivity () decline.
A. is bound to
B. is determined to
C. is unlikely to
D. is related to
V-P试验阳性结果为:()
A. 黑色
B. 红色
C. 黄色
D. 绿色
Paul is an () worker, and rarely does well in examinations. However he often refuses our help.
A. errant
B. erroneous
C. erratic
D. exotic